Black Out (24690 series, book 4)

In an evil world hidden amongst our own-in a subterranean fortress forged in the blood and bones of the slaves who fill it-one woman is determined to rise and bring down the Masters who reside there. Love, torture, murder, and lies... There are no consequences too high to stop the wrath coming to Whitlock. Only one can change the violent history that's built over centuries of human trafficking for the elite, but at what cost? The return of 24690 ... BLACK OUT. WARNING: This book is PITCH BLACK. If you have any triggers, this story may not be for you.